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WO2010041385A1 - Dispositif d’émission vidéo/audio et dispositif de réception vidéo/audio - Google Patents

Dispositif d’émission vidéo/audio et dispositif de réception vidéo/audio Download PDF

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Publication number
WO2010041385A1
WO2010041385A1 PCT/JP2009/004923 JP2009004923W WO2010041385A1 WO 2010041385 A1 WO2010041385 A1 WO 2010041385A1 JP 2009004923 W JP2009004923 W JP 2009004923W WO 2010041385 A1 WO2010041385 A1 WO 2010041385A1
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WO
WIPO (PCT)
Prior art keywords
video
audio
data
packet
data transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2009/004923
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English (en)
Japanese (ja)
Inventor
森山英一
松井崇行
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Priority to CN2009801372687A priority Critical patent/CN102160374A/zh
Priority to JP2010532787A priority patent/JP4785989B2/ja
Priority to US13/119,039 priority patent/US20110170614A1/en
Publication of WO2010041385A1 publication Critical patent/WO2010041385A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006—Details of the interface to the display terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4135—Peripherals receiving signals from specially adapted client devices external recorder
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/04—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/04—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
    • G09G2370/045—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller using multiple communication channels, e.g. parallel and serial
    • G09G2370/047—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller using multiple communication channels, e.g. parallel and serial using display data channel standard [DDC] communication
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/06—Consumer Electronics Control, i.e. control of another device by a display or vice versa
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/12—Use of DVI or HDMI protocol in interfaces along the display data pipeline

Definitions

  • the present invention relates to a data transmission / reception technique between a video / audio transmission apparatus and a video / audio reception apparatus, and more particularly to a high-speed transmission technique based on the HDMI (High-Definition Multimedia Interface) standard.
  • HDMI High-Definition Multimedia Interface
  • HDMI communication is used for high-speed transmission of video data and audio data to a video / audio receiver.
  • HDMI is a standard for transmitting video data and audio data using a single cable. In this standard, audio data is transmitted as packet data in a blanking period of video data.
  • the following inconvenience occurs when the video data to be transmitted has a low resolution. If the resolution is low, the frequency of the pixel clock is also low, which results in a limited size of voice packet data that can be transmitted in the blanking period. As a result, it is not possible to transmit voice packet data with a high sound quality exceeding a certain level. It is also difficult to transmit on multiple channels.
  • Normal video data uses 8 bits.
  • 2 bits, 4 bits, or 8 bits are expanded to use 10 bits, 12 bits, or 16 bits.
  • Deep color is an increase in the number of colors that can be transferred at the HDMI terminal, and was included in HDMI® 1.3.
  • the conventional 24-bit color of 8 bits for each RGB or YCbCr color the number of colors may be insufficient. Therefore, it was expanded to 10 bits, 12 bits, and 16 bits. It becomes 30 bits, 36 bits, and 48 bits, respectively.
  • Blu-ray discs are recorded in 24-bit color with 8 bits for each color, and deep color is not necessary if reproduced as it is. However, deep color may be necessary because the playback device uses a color number of 24 bits or more to create a clearer image.
  • Some liquid crystal display devices have the same color gradation expanded to 10 bits. Regardless of the deep color of HDMI, there are some that display an 8-bit input video in an optimal color among 10-bit colors.
  • Patent Document 1 since the conventional method disclosed in Patent Document 1 is to put audio data on extended bits (2 bits, 4 bits, or 8 bits), deep color video cannot be transmitted. In other words, high-quality audio data cannot be transmitted together with deep color video.
  • the present invention was created in view of such circumstances, and enables transmission / reception of higher quality data with a larger amount of information than before, regardless of the resolution of the video to be transmitted and the data bits of the video.
  • the main purpose is a simple operation, a simple operation, a simple operation, a simple operation, a simple operation, a simple operation, a simple operation, a simple operation, a simple operation, a simple operation, a simple operation, s, and the data bits of the video.
  • the main purpose was created in view of such circumstances, and enables transmission / reception of higher quality data with a larger amount of information than before, regardless of the resolution of the video to be transmitted and the data bits of the video.
  • a video / audio transmission apparatus includes a video / audio encoding unit that encodes an input video / audio signal into a predetermined standard format; A differential signal output unit for outputting the encoded data as a differential signal defined by the predetermined standard; With The differential signal output unit is configured to output the data encoded by the video / audio encoding unit on a data transmission unused area of a communication line defined by the predetermined standard, The video / audio encoding unit encodes data transmitted from both the data transmission area of the predetermined standard format and the data transmission unused area of the communication line defined by the predetermined standard from one signal. It is configured to output attribute information indicating whether or not it has been done.
  • the communication line has a data transmission area and a data transmission unused area.
  • This data transmission unused area is effectively utilized.
  • the video / audio encoding unit encodes the input video / audio signal into a predetermined standard format, and the encoded data is divided into a plurality of differential signal output units to be used as differential signals of the predetermined standard. Output.
  • the differential signal output unit transmits the encoded data in both the data transmission area and the data transmission unused area. As a result, the data transmission unused area is effectively utilized.
  • unused area for data transmission that is not used in the standard is effectively used, it is possible to transmit data having a larger amount of information than in the case where data is transmitted by a standard method in a predetermined standard format. This concept holds true regardless of whether or not bits are extended like deep color. Needless to say, “unused” in the “data transmission unused area” is an expression based on the standard method, and the present invention assumes that the area is used.
  • the video / audio encoding unit outputs attribute information indicating whether the encoded data is encoded from one signal.
  • This attribute information is used in the video / audio receiving apparatus of the communication partner when determining whether or not to decode the encoded data into one original signal. Thereby, it is possible to exhibit the effect that data having a larger amount of information can be transmitted regardless of whether the original signal is single or plural.
  • voice voice data packets encoded from a plurality of sound sources can be transmitted separately using the respective transmission paths.
  • video packets encoded from a plurality of types of video can be transmitted separately using the respective transmission paths.
  • the predetermined standard is an HDMI standard.
  • the application target is not limited to data of the HDMI standard, but can be applied to data of other standards. It is claimed that applying the present invention to the HDMI standard is one preferable aspect.
  • the technical effect of the above (1) effectively uses a data transmission unused area that is not used in the standard, so that a larger amount of data is transmitted in a predetermined standard format than when the standard method is used. This effect is particularly remarkable when applied to the HDMI standard.
  • the video / audio encoding unit has a packet generation function, and the differential signal output unit outputs arbitrary packet data to the data transmission unused area.
  • the present invention is not applicable to any of data conforming to the HDMI standard and data of a standard other than the HDMI standard. It is claimed that the present invention can be applied to the case where packet data of an arbitrary standard is separately transmitted in addition to the HDMI standard stipulated data to be transmitted. Also in this case, since the data transmission unused area (1) that is not used in the standard is effectively used, it is possible to transmit data having a larger amount of information than in the case of transmitting by the standard method. Become.
  • the differential signal output unit outputs packet data defined by the HDMI standard to the data transmission unused area.
  • packet data stipulated by the HDMI standard that is a standard transmission target is output and transmitted to the data transmission area of the HDMI standard
  • another packet data that is also stipulated by the HDMI standard is not used for data transmission by the HDMI standard. It means to output to the area and send. That is, in the present invention, one packet data is transmitted in the data transmission area and another packet data is transmitted in the data transmission unused area, and the present invention can be applied to a plurality of types of signals. Has been claimed.
  • the video / audio encoding unit encodes one input video signal or audio signal into packet data defined by the HDMI standard, and the differential signal There is a mode in which the output unit outputs the encoded packet data by dividing it into a data transmission area defined by the HDMI standard and the data transmission unused area.
  • packet data obtained by encoding one video signal or audio signal is divided into a plurality of parts, one is output to the data transmission area, and another is output to the data transmission unused area. Since simultaneous transmission is possible, more video packet data or audio packet data can be transmitted.
  • packet data defined by the HDMI standard generated by the video / audio encoding unit includes an audio sample packet, an audio clock / regeneration packet, an audio info frame packet, one There is a mode in which one or a plurality of bit audio sample packets, DST audio packets, and HBR audio stream packets are included.
  • This aspect specifically describes voice packet data to be transmitted using the data transmission unused area.
  • the audio sample packet is an uncompressed audio packet of the HDMI standard.
  • the audio clock regeneration packet is a packet transmitted to generate an audio clock on the receiving side.
  • the audio info frame packet is a packet including parameters representing the characteristics of audio data.
  • One-bit audio sample packets, DST audio packets, and HBR audio stream packets are compressed audio packets defined by the HDMI standard. According to this configuration, since the voice packet data listed above can be transmitted through a plurality of transmission paths, high-quality voice packet data and multi-channel voice packet data that could not be transmitted conventionally can be transmitted.
  • the packet data defined by the HDMI standard output by the differential signal output unit is an MPEG source info frame.
  • the MPEG source info frame is a video packet according to the HDMI standard. According to this configuration, since the video packet data listed above can be transmitted through a plurality of transmission paths, a high-quality video packet that could not be transmitted conventionally can be transmitted.
  • the video / audio receiver of the present invention is: A differential signal input unit for inputting a differential signal defined by a predetermined standard; A video / audio decoding unit that decodes a video / audio signal from data transmitted by the differential signal input by the differential signal input unit and encoded in the predetermined standard format; Enter whether or not the encoded data transmitted in both the data transmission area of the predetermined standard format and the data transmission unused area of the communication line defined by the predetermined standard is encoded from one signal An attribute information determination unit for determining based on the attribute information With The differential signal input unit inputs encoded data transmitted in both the data transmission area of the predetermined standard format and the data transmission unused area of the communication line defined by the predetermined standard.
  • the video / audio decoding unit is configured to decode both the data transmission area and the data transmission unused area encoded data input by the differential signal input unit,
  • the video / audio decoding unit is configured to synthesize and decode the encoded data as one signal when the attribute information determination unit indicates a positive determination.
  • encoded data of a predetermined standard sent from the other party's video / audio transmission device is input to the differential signal input unit and passed to the video / audio decoding unit.
  • the video / audio decoding unit decodes both the encoded data in the data transmission area and the encoded data in the data transmission unused area. As described above, even when data is included in the data transmission unused area, it is possible to receive the data, and to receive data with a larger amount of information than in the case where data is received in a standard format in a predetermined standard format. Is possible.
  • a differential signal of a predetermined standard sent from the other party's video / audio transmission device is input to the differential signal input unit and passed to the video / audio decoding unit.
  • the attribute information determination unit determines whether or not the encoded data in the data transmission area and the encoded data in the data transmission unused area are encoded from one signal based on the attribute information.
  • the video / audio decoding unit synthesizes and decodes the encoded data as one signal, and when the determination result is negative, the video / audio decoding unit Are decoded as separate signals.
  • the predetermined standard is an HDMI standard.
  • the configuration of the above (8) is not limited to the data of the HDMI standard but can be applied to data of other standards.
  • This aspect claims that applying the present invention to the HDMI standard is one preferred aspect.
  • the technical effect of the above (8) effectively uses the unused area for data transmission that is not used in the standard, so that a larger amount of data is received than in the case where the standard format is received in a predetermined standard format. This effect is particularly remarkable when applied to the HDMI standard.
  • the video / audio decoding unit decodes the data when any packet data is included in the data transmission unused area. is there.
  • any of data conforming to the HDMI standard and data of a standard other than the HDMI standard is applicable, and in addition to the data of the HDMI standard stipulated as a standard transmission target, a packet of an arbitrary standard is separately provided. It is claimed that it can also be applied when receiving data.
  • the data transmission unused area that is not used in the standard in the above (8) is effectively used, it is possible to receive data with a larger amount of information than in the case of receiving with the standard system. It becomes.
  • the video / audio decoding unit converts the data into audio There is a mode in which the signal is decoded.
  • the packet data stipulated by the HDMI standard that is the standard reception target is decoded from the data transmission area of the HDMI standard, and another packet data stipulated by the HDMI standard is also decoded from the data transmission unused area. It is claimed that this is possible with the present invention. That is, one packet data is decoded from the data transmission area, and another packet data is decoded from the data transmission unused area, and the present invention can be applied to a plurality of types of signals. That is, according to the present invention, it is possible to decode voice packets transmitted through a plurality of paths into voice signals separately to create a plurality of types of voice signals.
  • the video / audio decoding unit converts the data into video There is a mode in which the signal is decoded. According to this aspect, it becomes possible to receive video packet data separately in addition to the video packet data stipulated by the HDMI standard, and decode video packets transmitted from a plurality of paths into video signals separately. It is possible to create a plurality of types of video signals.
  • the video / audio decoding unit transmits the audio packet data transmitted in the data transmission area defined by the HDMI standard and the data transmission unused area.
  • the video / audio decoding unit transmits the video packet data transmitted in the data transmission area defined by the HDMI standard and the data transmission unused area. There is a mode in which the received video packet data is combined into a single video signal and decoded. According to this aspect, it is possible to synthesize and decode video packets transmitted from a plurality of paths into a single video signal with higher image quality.
  • the attribute information may include information indicating whether or not there is data in the data transmission unused area.
  • the packet data transmitted by the data transmission unused area and the packet data transmitted by the data transmission area defined by the predetermined standard are separated by separate packet data encoded from different input signals. It is possible to distinguish whether there is packet data that is encoded from one input signal and is divided and transmitted.
  • the attribute information determination unit determines whether there is data in the data transmission unused area.
  • the packet data received by the data transmission unused area and the packet data received by the data transmission area defined by the predetermined standard are different packet data encoded from different input signals.
  • the data transmission unused area which has been conventionally not directly used in the standard in the predetermined standard, is effectively used for data transmission, it is more than in the case of transmitting by the standard method in the predetermined standard format. It is possible to send and receive data with a large amount of information.
  • FIG. 1 is a block diagram illustrating a configuration of a connection state between a video / audio transmission device and a video / audio reception device according to Embodiment 1 of the present invention.
  • FIG. 2 is a conceptual diagram (corresponding to the prior art) of a data transmission area and a data transmission unused area for packet transmission defined by the HDMI standard.
  • FIG. 3 is a conceptual diagram of a data transmission area and a data transmission unused area for packet transmission in the present invention.
  • FIG. 4 is a conceptual diagram of a packet transmission data transmission area and a data transmission unused area in the embodiment of the present invention.
  • FIG. 1 is a block diagram illustrating a configuration of a connection state between a video / audio transmission device and a video / audio reception device according to Embodiment 1 of the present invention.
  • FIG. 2 is a conceptual diagram (corresponding to the prior art) of a data transmission area and a data transmission unused area for packet transmission defined by the HDMI standard.
  • FIG. 3 is a conceptual diagram
  • FIG. 5 is a block diagram showing a configuration of a connection state between the video / audio transmission device and the video / audio reception device according to Embodiment 2 of the present invention.
  • FIG. 6A is an example of attribute information data.
  • FIG. 6B is an example of data determination in the video / audio reception device using attribute information data.
  • FIG. 7 is an example of a 3D video format standardized by HDMI 1.4 Ver1.4.
  • FIG. 8 is a block diagram showing a configuration of a connection state between the video / audio transmission device and the video / audio reception device according to Embodiment 3 of the present invention.
  • FIG. 9A is an example of attribute information data.
  • FIG. 9B is an example of data determination in the video / audio receiving apparatus using attribute information data.
  • FIG. 10 is a block diagram illustrating a configuration of a connection state between the video / audio transmission device and the video / audio reception device according to the fourth embodiment of the present invention.
  • FIG. 11 is a conceptual diagram of a packet transmission data transmission area and a data transmission unused area in the fourth embodiment of the present invention.
  • FIG. 12A is an example of attribute information data.
  • FIG. 12B is an example of data determination in the video / audio reception device using attribute information data.
  • FIG. 1 is a block diagram showing a configuration of a connection state between a video / audio transmission device and a video / audio reception device according to Embodiment 1 of the present invention.
  • 10 is a DVD player which is an example of a video / audio transmission device
  • 20 is a TV which is an example of a video / audio reception device
  • 30 is an HDMI cable.
  • the DVD player 10 and the TV 20 are connected via an HDMI cable 30.
  • the DVD player 10 includes a video / audio reproduction unit (not shown), and reads a video signal and an audio signal from a DVD as a recording medium.
  • 11 is an HDMI transmission LSI
  • 12 is a video signal input unit for inputting a video signal reproduced by the video / audio reproduction unit
  • 13 is an audio signal input unit for inputting an audio signal reproduced by the video / audio reproduction unit.
  • 14 is a video / audio HDMI encoding unit as a video / audio encoding unit having a packet generation function in addition to a function of encoding an input video / audio signal into an HDMI standard format
  • 15 is a video / audio HDMI encoding.
  • a TMDS output unit serving as a differential signal output unit that outputs an HDMI standard signal input from the unit 14 as a differential signal to the HDMI cable 30 through the three TMDS channels CH0, CH1, and CH2, and 16 controls the DVD player 10. It is a transmission device control CPU that governs.
  • the transmission form in the HDMI cable 30 uses three channels, which are TMDS channels CH0, CH1, and CH2.
  • TMDS Transition Minimized Differential Signaling
  • TMDS Transition Minimized Differential Signaling
  • FIG. 2 is a conceptual diagram of a data transmission area and a data transmission unused area for packet transmission defined by the HDMI standard.
  • FIG. 2 corresponds to the prior art.
  • the shaded portion is a standard data transmission area according to the HDMI standard.
  • the white portions of the data lines D4 to D7 below Packet1 and Packet2 are data transmission unused areas.
  • audio signals transmitted through the TMDS channel are transmitted as packet data 40 to 42 and packet data 43 to 45 in a part of the video blanking period.
  • HSYNC indicates a horizontal synchronization signal
  • VSYNC indicates a vertical synchronization signal.
  • D0 to D7 indicate 8-bit data lines, and video data is transmitted using all eight data lines D0 to D7 in the video period, but only four data lines D0 to D3 are standard in the blanking period. Is used to transmit audio data.
  • two pieces of audio packet data are transmitted (Packet1, Packet2). That is, the synchronization signal and voice packet header are transmitted as packet data 40 in the TMDS channel CH0, transmitted as voice packet data 41 in the TMDS channel CH1, transmitted as voice packet data 42 in the TMDS channel CH2, and At this timing, the synchronization signal and voice packet header are transmitted as packet data 43 on the TMDS channel CH0, transmitted as voice packet data 44 on the TMDS channel CH1, and transmitted as voice packet data 45 on the TMDS channel CH2.
  • the voice packet header is transmitted in the standard data transmission unused area 50, and in the TMDS channel CH1, the voice packet data is transmitted in the standard data transmission unused area 51.
  • voice packet data is transmitted in the standard data transmission unused area 52 (Packet 3).
  • the voice packet header is transmitted on the standard data transmission unused area 53 on the TMDS channel CH0, and the voice packet data is transmitted on the standard data transmission unused area 54 on the TMDS channel CH1.
  • voice packet data is transmitted on the standard data transmission unused area 55 (Packet 4).
  • the video / audio HDMI encoding unit 14 also generates and outputs attribute information indicating whether or not there is packet data in the data transmission unused area of the communication line defined by the HDMI standard. It is configured as follows.
  • the TMDS output unit 15 is configured to output the attribute information to the HDMI cable 30 in a data transmission unused area.
  • Reference numeral 21 denotes an HDMI receiving LSI
  • reference numeral 22 denotes a TMDS input unit as a differential signal input unit that receives HDMI standard signals transmitted from the DVD player 10 via three TMDS channels CH0, CH1, and CH2.
  • Reference numeral 23 denotes a video / audio HDMI decoding unit as a video / audio decoding unit that decodes a video / audio signal from an input HDMI standard signal.
  • a video signal output unit 24 outputs the decoded video signal.
  • An audio signal output unit 25 outputs the decoded audio signal.
  • Reference numeral 26 denotes an attribute information determination unit that checks attribute information in the data transmission unused area. The attribute information determination unit 26 confirms whether there is packet data in the data transmission unused area according to the HDMI standard stipulation, based on the determination based on the value of the attribute information.
  • Reference numeral 27 denotes a receiver control CPU that controls the TV 20.
  • a video / audio reproduction unit (not shown) reads a video signal and an audio signal from a recording medium (DVD).
  • the read video signal is input to the video signal input unit 12, and the audio signal is input to the audio signal input unit 13.
  • the video signal from the video signal input unit 12 is converted into an HDMI standard signal and output to the TMDS output unit 15.
  • the audio signal from the audio signal input unit 13 is also converted into an HDMI standard signal and output to the TMDS output unit 15.
  • the HDMI standard signal input to the TMDS output unit 15 is divided into three, converted into differential signals in the TMDS channels CH0, CH1, and CH2, and output to the HDMI cable 30.
  • the encoding unit 14 has a packet generation function, and the encoding unit 14 generates a control system packet including attribute information based on a control system signal input from the transmission device control CPU 16 and outputs the control system packet to the TMDS output unit 15.
  • the encoding unit 14 generates attribute information indicating that there is packet data in the data transmission unused area.
  • the TMDS output unit 15 attaches the attribute information to the data transmission unused area 60 in FIG. 4 and transmits it. By transmitting this attribute information, it is possible to cause the attribute information determination unit 26 in the TV 20 to determine that the packet data existing in the data transmission unused area should be decoded.
  • the place where the attribute information is attached is the data transmission unused area 60, it may be anywhere as long as it is a data transmission unused area of the TMDS channel CH0. Similar attribute information may be added to the reserved area of the audio sample packet defined by the HDMI standard.
  • the attribute information input to the TMDS output unit 15 is output to the HDMI cable 30 via the TMDS channel CH0.
  • the encoding unit 14 converts the audio signal input from the audio signal input unit 13 into an audio sample packet (Audio Sample Packet), and HDMI standards of TMDS channels CH0, CH1, and CH2.
  • the data is divided into data transmission areas 40 to 42 and data transmission unused areas 50 to 52 according to regulations. According to this, the transmission amount per unit time of the audio sample packet can be doubled in the case of the prior art. Furthermore, audio sample packets can be transmitted even in the data transmission unused areas 53 to 55, and more packet data can be transmitted.
  • the HDMI standard signal transmitted from the DVD player 10 via the TMDS channels CH0, CH1, and CH2 of the HDMI cable 30 is received by the TMDS input unit 22.
  • the TMDS input unit 22 receives audio sample packets transmitted in the data transmission areas 40 to 42 according to the HDMI standard and audio sample packets transmitted in the data transmission unused areas 50 to 52.
  • the video packet from the TMDS input unit 22 is decoded into a video signal by the video / audio HDMI decoding unit 23.
  • the audio sample packet from the TMDS input unit 22 is decoded by the decoding unit 23 into an audio signal.
  • the attribute information determination unit 26 checks the attribute information of the data transmission unused area 60, and confirms that the audio sample packet is also present in the data transmission unused areas 50 to 52. In order to perform this confirmation, not only the audio sample packet in the data transmission area but also the audio sample packet in the data transmission unused area is decoded.
  • the unused area for data transmission which is supposed not to be used directly by the HDMI standard, is effectively used for data transmission. Therefore, the transmission amount of audio sample packets per unit time can be increased as compared with the conventional technique. That is, even high-quality audio data that could not be transmitted due to the limitation of the pixel clock conventionally can be transmitted.
  • the video / audio reception device TV 20
  • the audio data transmitted from the video / audio transmission device can be converted into a high-quality audio signal that could not be reproduced conventionally and reproduced.
  • the technique of the present invention is a one-bit audio sample packet (One ⁇ ⁇ ⁇ ⁇ Audio Sample Packet) or a DST audio packet (DST Audio) that is a compressed audio packet according to the HDMI standard. Packet), HBR audio stream packet (HBR Audio Stream Packet), and the like.
  • the audio packet has been described above, but the present invention can also be applied to an MPEG source info frame (MpegpInfo InfoFrame) that is a video packet according to the HDMI standard.
  • MpegpInfo InfoFrame MPEG source info frame
  • the present invention may be applied to all types of packets in the HDMI standard.
  • a control system packet defined by the HDMI standard is converted into a control system signal by the decoding unit 23 and transmitted to the receiving device control CPU 27.
  • the first embodiment can be similarly applied.
  • FIG. 5 is a block diagram showing a configuration of a connection state between the video / audio transmission device and the video / audio reception device according to Embodiment 2 of the present invention.
  • the same reference numerals as those in FIG. 1 of the first embodiment indicate the same components.
  • the configuration specific to the present embodiment is as follows.
  • the DVD player 10 has two audio signal inputs # 1 and # 2 in the audio signal input unit 13, while the TV 20 outputs two audio signal outputs # 1 and # 2 in the audio signal output unit 25. Have.
  • the audio signal # 1 and the audio signal # 2 input to the audio signal input unit 13 are converted into separate audio sample packets by the video / audio HDMI encoding unit 14.
  • an audio clock regeneration packet (Audio Clock Regeneration Packet) and an audio info frame packet (Audio InfoFrame Packet) are also converted for each audio signal.
  • the audio clock regeneration packet is transmitted to generate an audio clock on the TV 20 side.
  • the audio info frame packet includes a parameter representing the characteristics of the audio data. One audio signal is generated from these three types of packets.
  • the encoding unit 14 in the DVD player 10 is transmitted in both the data transmission areas 40 to 42 in the HDMI standard format and the data transmission unused areas 50 to 52 defined in the HDMI standard. Attribute information indicating whether or not the packet header and the packet data are encoded from one signal is generated and output (see the data transmission unused area 60 in FIG. 4).
  • the attribute information determination unit 26 in the TV 20 determines whether the audio sample packet transmitted in the data transmission areas 40 to 42 according to the HDMI standard and the data transmission unused areas 50 to 52 are determined based on the value of the received attribute information. It is configured to confirm whether or not the audio sample packet to be transmitted has been converted from the same sound source.
  • the encoding unit 14 divides the above three types of audio data packets generated from each of the audio signal # 1 and the audio signal # 2 into two, and the TMDS output unit 15 converts one packet data into data according to the HDMI standard. Transmission is performed in the transmission areas 40 to 42, and the other packet data is transmitted in the data transmission unused areas 50 to 52. As a result, the packet data of the separate audio signals # 1 and # 2 input in two systems can be simultaneously transmitted to the connected TV 20 via the HDMI cable 30. At this time, the encoding unit 14 generates and transmits information indicating that separate data is transmitted as attribute information. By transmitting this attribute information, it is possible to cause the attribute information determination unit 26 in the TV 20 to determine whether the audio sample packet should be decoded separately or decoded together.
  • the video packet from the TMDS input unit 22 is decoded into a video signal by the video / audio HDMI decoding unit 23.
  • the audio sample packet from the TMDS input unit 22 is decoded by the decoding unit 23 into an audio signal.
  • the attribute information determination unit 26 checks the attribute information of the data transmission unused area 60, and transmits the audio sample packet transmitted in the data transmission areas 40 to 42 according to the HDMI standard and the data transmission unused areas 50 to 52. It is confirmed whether or not the audio sample packet to be transmitted is converted from the same sound source. If the confirmation confirms that both audio sample packets are derived from different sound sources, both audio sample packets are decoded as separate audio signals and confirmed to be from the same sound source. For example, both audio sample packets are synthesized into one audio signal and then decoded.
  • attribute information a specific example of attribute information will be described with reference to FIG. 6A.
  • identification of whether or not there is packet data in the data transmission unused area is combined with identification of whether the two packet data are derived from different signals or one signal. Contains attribute information.
  • the identification of whether or not there is packet data in the former data transmission unused area is made in the first bit of the attribute information. Specifically, when there is packet data, the bit is “1”, and when there is no packet data, it is “0”.
  • the bit is “0” when the signals are derived from different signals, and is “1” when the signals are derived from one signal.
  • Determination of attribute information in the attribute information determination unit 26 is performed, for example, according to the flowchart shown in FIG. 6B.
  • the first bit is first determined (step S61), and then the second bit is determined (step S62).
  • the process proceeds to the determination of the second bit (step S62).
  • two audio signals generated by the video / audio transmission device can be transmitted to the video / audio reception device (TV 20).
  • the receiving device can convert the audio data packet transmitted from the video / audio transmitting device into two audio signals and output separate audio signals.
  • FIG. 7 shows an example of a new 3D video format defined by the HDMI standard Ver1.4.
  • this video format it is possible to transmit left-eye and right-eye images.
  • the 3D video format is transmitted, it is assumed that the left-eye video and the right-eye video are completely different from each other. It is an Example for transmitting / receiving one image
  • FIG. 8 is a block diagram illustrating a configuration of a connection state between the video / audio transmission device and the video / audio reception device according to the third embodiment.
  • the same reference numerals as those in FIG. 5 of the second embodiment indicate the same components.
  • the configuration specific to the present embodiment is as follows.
  • the DVD player 10 uses a video signal input unit 12 for a 3D video format video signal # in which a left-eye video (referred to as video # 1) and a right-eye video (referred to as video # 2) are completely different from each other. 0 is input.
  • the TV 20 has two video signal outputs of the video signal # 1 and the video signal # 2 in the video signal output unit 24.
  • the audio signal # 1 is an audio signal that matches the video # 1 (video signal # 1)
  • the audio signal # 2 is an audio signal that matches the video # 1 (video signal # 2).
  • the audio signal # 1 and the audio signal # 2 input to the audio signal input unit 13 are converted into separate audio sample packets as in the second embodiment, and in addition, The audio clock / regeneration packet and the audio info frame packet are also converted and transmitted to the TV 20.
  • the encoding unit 14 divides the three types of audio data packets generated from the audio signal # 1 and the audio signal # 2 into two respectively, and the TMDS output unit 15 Packet data is transmitted in the data transmission areas 40 to 42 (FIG. 4) according to the HDMI standard, and the other packet data is transmitted in the data transmission unused areas 50 to 52 (FIG. 4).
  • the encoding unit 14 also has information indicating that the video # 1 and the video # 2 are configured in completely different 3D video formats as attribute information, packet data generated from the audio signal # 1, and the audio signal # 1. 2 is transmitted using the data transmission areas 40 to 42 (FIG. 4) according to the HDMI standard, and the remaining packet data is used in the data transmission unused areas 50 to 52 (FIG. 4).
  • the attribute information that can be used to determine whether the data is transmitted using the data transmission unused areas 60 and 61 (FIG. 4) can be transmitted.
  • the DVD player 10 transmits after determining whether or not the TV 20 can receive the 3D video format (video # 1 and video # 2 are completely different) transmitted in the present embodiment. This determination is possible by the two configurations described below.
  • Each of the HDMI transmission LSI 11 and the HDMI reception LSI 21 includes interfaces 35 and 37 for performing DDC (Display Data Channel) communication, and the DVD player 10 is connected via a DDC line 34 that is a part of the HDMI cable 30.
  • DDC Display Data Channel
  • the other is a configuration in which the DVD player 10 and the TV 20 communicate with each other using a CEC (Consumer Electronics Control) 32, and the DVD player 10 acquires information on whether or not the video signal transmitted in the present embodiment can be received from the TV 20. It is.
  • the HDMI transmission LSI 11 and the HDMI reception LSI 21 are respectively provided with interfaces 36 and 38 for performing CEC communication, and the DVD player 10 and the TV 10 are connected via a CEC line 32 that is a part of the HDMI cable 30. Information can be exchanged.
  • the DVD player 10 After confirming that the TV 20 has a function capable of receiving 3D video format video (video # 1 and video # 2 are completely different) by one of the above two configurations, the DVD player 10 Starts video transmission.
  • the attribute information determination unit 26 is based on the attribute information sent from the DVD player 10. Determining whether it is a normal 3D video format or a 3D video format (video # 1 and video # 2 are completely different from each other); Determining whether the packet data is transmitted using the data transmission areas 40 to 42 according to the HDMI standard or the packet data is transmitted using the data transmission unused areas 50 to 52; I do.
  • attribute information a specific example of attribute information will be described with reference to FIG. 9A.
  • this attribute information the following three cases are described as examples.
  • the first is when video # 1 and video # 2 are one video (when there is no packet data in the data transmission unused area), and the attribute information takes a value of “000”.
  • the audio packet data of video # 1 is transmitted via the packet data transmission area defined by the HDMI standard, and data transmission is performed. This is a case where the audio packet data of the video # 2 is transmitted via the unused area, and the attribute information takes a value of “011”.
  • audio packet data of video # 2 is transmitted via a packet data transmission area defined by the HDMI standard, and data transmission is performed. This is a case where the audio packet data of the video # 1 is transmitted via the unused area, and the attribute information takes a value of “101”.
  • Determination of attribute information in the attribute information determination unit 26 is performed, for example, according to the flowchart shown in FIG. 9B.
  • the first bit is first determined (step S91), then the second bit is determined (step S92), and finally the third bit is determined (step S93).
  • the process proceeds to the determination of the second bit (step S92).
  • the audio packet data decoded as data 1 and sent via the data transmission unused area is decoded as data of the video signal # 2 (step S95).
  • step S93 the determination of the third bit (step S93). If it is determined that the third bit is 1 in the determination of the third bit (step S93), the audio packet data transmitted through the packet data transmission area defined by the HDMI standard is the video signal #.
  • the audio packet data decoded as the data 2 and sent via the data transmission unused area is decoded as the data of the video signal # 1 (step S96).
  • the video and audio transmission apparatus uses the 3D video format, which is a completely different video for the left-eye video and the right-eye video, and uses one audio packet.
  • the video / audio reception apparatus TV 20
  • the video / audio reception apparatus can output two video / audio signals separately at the same time.
  • FIG. 10 is a block diagram illustrating a configuration of a connection state between the video / audio transmission device and the video / audio reception device according to the fourth embodiment. 10, the same reference numerals as those in FIG. 8 of the third embodiment indicate the same components.
  • the configuration specific to the present embodiment is as follows.
  • the DVD player 10 includes a video signal combining unit 33 that combines two video signal inputs corresponding to the video signal # 1 and the video signal # 2 into the video signal input unit 12 and the video signal # 1 and the video signal # 2. And have.
  • the configuration of the TV 20 is the same as that of the third embodiment.
  • the video signal # 1 and the video signal # 2 input to the video signal input unit 12 correspond to the video signal # 1 corresponding to the video L for the left eye in the standard shown in FIG.
  • the video signal # 2 is converted so as to correspond to the video R for use.
  • the encoding unit 14 has a packet generation function. Packet data generated by the encoding unit 14 based on the audio signal # 2 and the video signal # 2 is a generic name of packet data generated by the encoding unit 14 from the audio signal # 1 and the video signal # 1. Is a packet # 2. For packet # 1 and packet # 2, all packets defined by the HDMI standard are targeted.
  • the encoding unit 14 can transmit the packet # 1 from the TMDS output unit 15 via the HDMI standard format data transmission areas 40 to 42 and 43 to 45, and the packet # 2 is output to the TMDS.
  • the unit 15 can transmit data via the data transmission unused areas 50 to 52 and 53 to 55 of the communication line defined by the HDMI standard.
  • the video / audio HDMI encoding unit 14 transmits two videos from different video sources, and either of the packet # 1 and the packet # 2 sets the data transmission areas 40 to 42 and 43 to 45 in the HDMI standard format. Attribute information indicating that any of the remaining data is transmitted via the data transmission unused areas 50 to 52 and 53 to 55 is generated and output.
  • the attribute information transmission method is the same as in the first to third embodiments.
  • the DVD player 10 needs to determine whether the TV 20 can receive two different videos before transmitting them. This determination can be made by the two configurations described below as in the third embodiment.
  • One is information indicating that the video signal transmitted in the present embodiment is receivable in EDID (Extended Display Identification Data) 31 which is receiving device information, and the DVD player 10 determines by reading the EDID of the TV 20. It is the structure to do.
  • EDID Extended Display Identification Data
  • the other is a configuration in which the DVD player 10 and the TV 20 communicate with each other using a CEC (Consumer Electronics Control) 32, and the DVD player 10 acquires information on whether or not the video signal transmitted in this embodiment can be received from the TV 20. It is.
  • the DVD player 10 starts transmission after confirming that the TV 20 has a function capable of receiving two separate videos to be transmitted in the present embodiment by one of the above two configurations. .
  • the attribute information determination unit 26 in the TV 20 determines the packet data transmitted through the data transmission areas 40 to 42 and 43 to 45 according to the HDMI standard and the data transmission based on the determination based on the value of the received attribute information.
  • One of the packet data transmitted via the unused areas 50 to 52 and 53 to 55 is used as data consisting of the data of the video signal # 1 and the audio signal # 1, and the other is used as the data of the video signal # 2.
  • the audio signal # 2 can be handled as data.
  • Packet data transmitted through ⁇ 52, 53 ⁇ 55 is one of the data consisting of the video signal # 1 and the audio signal # 1, and the other is the video signal # 2 and the audio signal # 2.
  • the decoded data can be output as video signal # 1 and video signal # 2 from the video signal output unit 24 and as audio signal # 1 and audio signal # 2 from the audio signal output unit, respectively. It has become.
  • attribute information a specific example of attribute information will be described based on FIG. 12A.
  • this attribute information the following three cases are described as examples.
  • the first is the case where the video signal # 1 and the video signal # 2 are one left-eye video and right-eye video (when there is no packet data in the data transmission unused area).
  • the attribute information is “ It takes the value 000 ".
  • the video signal # 1 and the video signal # 2 are two separate videos
  • the video signal # 1 and the audio signal # 1 are transmitted via a packet data transmission area defined by the HDMI standard.
  • Packet data (packet # 1) is transmitted
  • packet data (packet # 2) composed of the video signal # 2 and the audio signal # 2 is transmitted via the data transmission unused area.
  • the attribute information takes a value of “011”.
  • the video signal # 2 and the audio signal # 2 are transmitted via a packet data transmission area defined by the HDMI standard.
  • Packet data (packet # 2) is transmitted, and packet data (packet # 1) consisting of the video signal # 1 and the audio signal # 1 is transmitted via the data transmission unused area. Takes the value "101".
  • the determination of attribute information in the attribute information determination unit 26 is performed according to a flowchart shown in FIG. 12B, for example.
  • the attribute information is received, first the first bit is determined (step S121), then the second bit (step S122), and finally the third bit (step S123).
  • the packet data transmitted through the packet data transmission area defined by the HDMI standard is the video signal # 1.
  • Packet data that has been decoded as data (packet # 1) consisting of the video signal # 1 and the audio signal # 2, and is transmitted via the data transmission unused area. Decoded as # 2) (step S125).
  • Packet # 1 (video signal # 1 and audio signal # 1) and packet # 2 (video signal # 2 and audio signal # 2) are output separately.
  • the process proceeds to the determination of the third bit (step S123).
  • the packet data transmitted via the packet data transmission area defined by the HDMI standard is the video signal # 2.
  • Packet data that is decoded as data (packet # 2) consisting of video signal # 2 and audio signal # 1, and sent via the data transmission unused area is data (packet) consisting of video signal # 1 and audio signal # 1 Decoded as # 1) (step S126).
  • Packet # 1 (video signal # 1 and audio signal # 1) and packet # 2 (video signal # 2 and audio signal # 2) are output separately.
  • two separate video / audio signals generated by the video / audio transmission device can be simultaneously transmitted to the video / audio reception device (TV 20). Further, the video / audio reception device can simultaneously output two video / audio signals transmitted from the video / audio transmission device separately.
  • the video / audio transmission device and the video / audio reception device according to the present invention have an effect that data transmission / reception of a large amount of information, which has not been possible in the past, can be performed, and DVD players, DVD recorders, BD ( It is useful as a video / audio transmission device such as a Blu-ray (Disc) player or a BD recorder, or as a video / audio reception device such as a TV, AV amplifier, or projector.
  • Disc Blu-ray
  • DVD player (video / audio transmitter) 11 HDMI transmission LSI 12 video signal input unit 13 audio signal input unit 14 video audio HDMI encoding unit (video audio encoding unit) 15 TMDS output section (differential signal output section) 16 Transmitter control CPU 20 TV (video / audio receiver) 21 HDMI Receiver LSI 22 TMDS input section (differential signal input section) 23 Video / Audio HDMI Decoding Unit (Video / Audio Decoding Unit) 24 video signal output unit 25 audio signal output unit 26 attribute information determination unit 27 receiver control CPU 30 HDMI cable CH0, CH1, CH2 TMDS channel 31 EDID 32 CEC line 33 Video signal synthesizer

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

L’invention concerne une unité de codage vidéo/audio qui code un signal vidéo/audio entrant en un format normalisé prédéterminé. Une unité de sortie de signal différentiel délivre les données codées sous la forme d’un signal différentiel défini par la norme prédéterminée. L’unité de sortie de signal différentiel place les données codées par l’unité de codage vidéo/audio dans une région réservée à l’émission des données qui n’est pas utilisée directement dans la norme normale et délivre les données. Par conséquent, la région réservée pour l’émission des données est utilisée efficacement et il est possible d’émettre un volume d’informations plus grand.
PCT/JP2009/004923 2008-10-09 2009-09-28 Dispositif d’émission vidéo/audio et dispositif de réception vidéo/audio Ceased WO2010041385A1 (fr)

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CN2009801372687A CN102160374A (zh) 2008-10-09 2009-09-28 视频音频发送装置以及视频音频接收装置
JP2010532787A JP4785989B2 (ja) 2008-10-09 2009-09-28 映像音声送信装置および映像音声受信装置
US13/119,039 US20110170614A1 (en) 2008-10-09 2009-09-28 Video/audio transmission device and video/audio reception device

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JP2008-262627 2008-10-09

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WO2013122387A1 (fr) 2012-02-15 2013-08-22 Samsung Electronics Co., Ltd. Appareil de transmission de données, appareil de réception de données, système de transmission/réception de données, procédé de transmission de données et procédé de réception de données
WO2013122386A1 (fr) 2012-02-15 2013-08-22 Samsung Electronics Co., Ltd. Appareil de transmission de données, appareil de réception de données, système d'émission et de réception de données, procédé de transmission de données, procédé de réception de données, et procédé d'émission et de réception de données
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